1. - Yup.
2. - Same as 1., substituting "gun" for "gay".
3. - It's about national sovereignty. It's not the 1600s, 1700s, or 1800s and U.S. citizenship (as well as citizenship many other places) carries with it some entitlements and benefits.

This is a case where our educational system, coupled with a lack of compulsory military service has failed our country. I have come to believe that the bulk of people born after about 1957 or 1958 do not intellectually differentiate between "U.S. citizen" and "person". This means they (incorrectly) believe that the rights, freedoms, and benefits of being a U.S. citizen are somehow universal rights/freedoms/benefits that apply to everyone on earth.

They do not.

Out forefathers paid - dearly in many, many cases - for those rights/freedoms/benefits. If you want to join us, there's a process and you're expected to ASSIMILATE (we used to call it the "melting pot") and CONTRIBUTE. And we have the right to pick and choose who comes in based on your ability to contribute to the whole.

4. - Maybe, but I'm not fully convinced yet. The level of chronic pot smokers who seem to stall out and become a drag on society seems higher than alcohol. If that's scientifically proven not to be the case then legalize and tax the hell out of it like alcohol.